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post #1 of (permalink) Old 10-13-2008, 07:54 PM
albayfz350
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Banshee Jetting HELP

I have a 97 Yamaha Banshee up until last month it just had a set of fmf gold series pipes and a k&n airfilter. I had it bored .40 over stock got an aggressive port and polish with boost ports drilled, and put a boost bottle on with FMF torque reeds, and i had my carbs synchronized. I was running a 181 jet and now am curious because i know nothing about jetting. Does anyone have any suggestions on where i should be now? Any help at all would be great and thanks in advance.
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post #2 of (permalink) Old 10-14-2008, 10:37 AM
 
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my buddy runs 220s and it runs great
maybe a tad lean
he has full bills pipes and a set of prolite pistons

try 2 220s


but stock should be like 200s or 205 i dont know where ur 180s came from
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post #3 of (permalink) Old 12-16-2008, 10:47 PM
 
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Quote:
Originally Posted by Mr_RPM View Post
my buddy runs 220s and it runs great
maybe a tad lean
he has full bills pipes and a set of prolite pistons

try 2 220s

but stock should be like 200s or 205 i dont know where ur 180s came from
wow you have no idea in the world what your talking about. he just had his bike bored .40 over, got an aggressive port job, and added FMF torque reeds. now if his bike was setup similar to your friends bike before he added all of these things then why would you not rejet it to acomadate for the extra flow?

First of all, stock banshee main jets are (200's, 210's, or 220's) depending on your altitude and climate. Second, you dont have to rejet for pistons, and there is no such thing as "full" two stroke pipes it would be pointless to buy just silencers the power is in the expantion chambers.


albayfz350- you have aftermarket keihin carbrators, you need to find out what mm of carbs they are and i would go on bansheehq.com and ask the to help you setup those carbs. I have little to no experience with keihin's although they are a very good carb.


Jetting tips: start with your main jet and keep stuffing bigger ones in there until your bike fills like it "chokes out" at high speeds, then install 1 size lower on the mains. then you can work with the needle and the pilot.
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post #4 of (permalink) Old 12-17-2008, 09:03 AM
 
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when i say full pipes i mean the headers
yeah i know the silencers dont do anything but make it louder

i was just recommending what works for my friend
personally i hate banshees and dont spend much time finding what works best for them

we dont get many of them at work either

sorry for not being perfect about my posts but if u want 100% perfect
detail i can do it for 91 dollars an hour as a "pro" mechanic

if u wanted to make me look bad just post a thread called Mr_RPM has no clue
u dident really need to say wow u have no clue what your doing
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post #5 of (permalink) Old 12-17-2008, 04:00 PM
 
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Quote:
Originally Posted by Mr_RPM View Post
when i say full pipes i mean the headers
yeah i know the silencers don't do anything but make it louder
two stroke do not have "headers" there "expantion chambers" and "silencers" are actually designed to "silence" the motor hence the name.

Quote:
Originally Posted by Mr_RPM View Post
i was just recommending what works for my friend
personally i hate banshees and don't spend much time finding what works best for them
i wouldn't be making suggestion that could be harmful to someone's bike if i wasn't sure about it

Quote:
Originally Posted by Mr_RPM View Post
we dont get many of them at work either
you work at a dealer?


Quote:
Originally Posted by Mr_RPM View Post
sorry for not being perfect about my posts but if u want 100% perfect
detail i can do it for 91 dollars an hour as a "pro" mechanic
sounds like im in the wrong profession
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post #6 of (permalink) Old 12-17-2008, 04:13 PM
 
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lol
yeah your right i shouldent post unless im shure its correct

yes the dealer is in brighton michigan

when i say headers you all know what i mean
and when i say 91 dollars an hour u also should know thats what the dealer charges
not what i make of corse
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